AT28HC64B-90SU Atmel, AT28HC64B-90SU Datasheet - Page 6

• Manufacturer Part Number: AT28HC64B-90SU
• Description: IC EEPROM 64KBIT 90NS 28SOIC
• Manufacturer: Atmel

Specifications of AT28HC64B-90SU

• Format - Memory: EEPROMs - Parallel
• Memory Type: EEPROM
• Memory Size: 64K (8K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9. AC Read Characteristics
10. AC Read Waveforms
Notes:
6
Symbol
t
t
t
t
t
ACC
CE
OE
DF
OH
(1)
(3)(4)
(2)
1. CE may be delayed up to t
2. OE may be delayed up to t
3. t
4. This parameter is characterized and is not 100% tested.
AT28HC64B
without impact on t
Parameter
Address to Output Delay
CE to Output Delay
OE to Output Delay
OE to Output Float
Output Hold
DF
is specified from OE or CE whichever occurs first (C
ADDRESS
OUTPUT
CE
ACC
OE
.
ACC
CE
(1)(2)(3)(4)
- t
- t
OE
CE
Min
after the falling edge of CE without impact on t
AT28HC64B-70
after the address transition without impact on t
0
0
0
HIGH Z
ADDRESS VALID
Max
70
70
35
35
t
ACC
t
CE
t
OE
L
= 5 pF).
Min
AT28HC64B-90
0
0
0
OUTPUT VALID
Max
90
90
40
40
t
OH
t
CE
DF
ACC
or by t
.
Min
AT28HC64B-120
ACC
0
0
0
- t
OE
after an address change
Max
120
120
50
50
0274L–PEEPR–2/3/09
Units
ns
ns
ns
ns
ns